CN218060332U - Foundation pit supporting structure with spray anchor hanging net - Google Patents
Foundation pit supporting structure with spray anchor hanging net Download PDFInfo
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- CN218060332U CN218060332U CN202220863936.7U CN202220863936U CN218060332U CN 218060332 U CN218060332 U CN 218060332U CN 202220863936 U CN202220863936 U CN 202220863936U CN 218060332 U CN218060332 U CN 218060332U
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- guide bar
- metal stock
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- metal
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Abstract
The utility model relates to a spout anchor and hang net underground structure, relate to the underground structure, it is including burying underground in the anchor rod of foundation ditch side slope and the reinforcing bar net of laying in foundation ditch side slope surface, the anchor rod includes metal stock and concrete column skin, the metal stock is used for stretching the one end of hanging the reinforcing bar net and establishes to stretch to hang the end, the metal stock is equipped with multiunit guide bar group, the axial dislocation set along the metal stock between each guide bar group, every guide bar group includes a plurality of guide bars, the guide bar of the same group sets up around the axis circumference array of metal stock, the guide bar radially keeps away from the metal stock along the direction of stretching to hang the end that is close to the metal stock gradually, the guide bar is used for hindering the metal stock along the pore wall that is radially close to anchor rod place hole. This application can improve the axiality in metal stock and stock place hole.
Description
Technical Field
The application relates to the field of foundation pit support, in particular to a spray anchor hanging net foundation pit support structure.
Background
The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit.
The spray anchor hanging net is a common foundation pit supporting form, and the main structure of the spray anchor hanging net comprises anchoring rods, a reinforcing mesh and a concrete guniting shell. The anchoring rod forms an anchoring structure for hanging a reinforcing mesh by the combined action of high-pressure sprayed concrete and a metal anchor rod driven into a rock stratum; when the anchoring rod is constructed, firstly, drilling a hole on the side slope of the foundation pit, then inserting the metal anchor rod into the hole, then, injecting concrete into the hole of the concrete shotcrete pipe, and wrapping the metal anchor rod after the concrete is solidified.
The axiality condition of the axis of the metal anchor rod and the whole axis of the anchoring rod has great influence on the overall structure strength of the anchoring rod, and the coaxiality condition of the hole where the metal anchoring rod and the anchoring rod are located is difficult to guarantee in the concrete injection process of the anchoring rod.
SUMMERY OF THE UTILITY MODEL
In order to solve the anchor rod at the concrete injection in-process, the difficult axiality condition in guarantee metal stock and anchor rod place hole, this application provides a shotcrete hangs net underground structure.
The application provides a spray anchor hangs net underground structure adopts following technical scheme:
the utility model provides a spout anchor and hang net underground structure, is including burying underground in the anchor rod of foundation ditch side slope and the reinforcing bar net of laying in foundation ditch side slope surface, the anchor rod includes that metal stock and concrete column are outer, the metal stock is used for stretching hang the one end of reinforcing bar net is established to stretch and is hung the end, the metal stock is equipped with multiunit guide bar group, each follow between the guide bar group the axial dislocation set of metal stock, every group the guide bar group includes a plurality of guide bars, with organizing the guide bar winds the axis circumference array of metal stock sets up, the guide bar is along being close to the direction of stretching hang the end of metal stock radially keeps away from gradually the metal stock, the guide bar is used for hindering the metal stock is along the pore wall that is close to anchor rod place hole radially.
By adopting the technical scheme, the guide rods of the guide rod group prevent the metal anchor rods from approaching the hole walls of the holes where the anchoring rods are located along the radial direction, when the concrete of the anchoring rods is solidified to form the outer layer of the concrete column, the axis of the metal anchor rods is closer to the axis of the anchoring rods, so that the wall thickness of each part of the outer layer of the concrete column is closer, and the structural strength of the anchoring rods is favorably ensured; the guide rod is close to the direction of the stretching end of the metal anchor rod is gradually and radially away from the metal anchor rod, so that the metal anchor rod is not easy to clamp in the process of being inserted into the foundation pit side slope.
Optionally, the end of hanging of stretching of metal stock is equipped with spacing retaining ring, spacing retaining ring is used for hindering the reinforcing bar net is kept away from the foundation ditch side slope.
By adopting the technical scheme, the limiting retainer ring is arranged and can block the reinforcing mesh from being away from the slope protection surface of the foundation pit, so that the axial movement of the metal anchor rod of the reinforcing mesh is reduced, and the reinforcing mesh can be favorably attached to the slope protection surface of the foundation pit; spacing retaining ring is the structure on outstanding metal stock surface, and spacing retaining ring is favorable to satisfying carrying on under spacing prerequisite to the reinforcing bar net, avoids the influence to metal stock intensity as far as possible.
Optionally, the limiting retainer ring is a multi-turn wound steel wire coil.
Through adopting above-mentioned technical scheme, spacing retaining ring passes through the winding formation of steel wire multiturn, and the metal stock is held tightly in the winding of steel wire coil, need not to fix through forms such as welding, and is comparatively convenient, and is difficult for influencing the structural strength of metal stock.
Optionally, the stretching end of the metal anchor rod is provided with a rubber inner sleeve for winding a steel wire to form a limiting check ring.
By adopting the technical scheme, the rubber inner sleeve is arranged, the steel wire is wound on the surface of the rubber inner sleeve to form the limiting check ring, so that the rubber inner sleeve tightly holds the metal anchor rod, and the position of the limiting check ring along the axial direction of the metal anchor rod is stable under the action of the rubber inner sleeve.
Optionally, the rubber inner sleeve is provided with a longitudinal cutting slit penetrating through the rubber inner sleeve, and the longitudinal cutting slit is arranged along the axial full length of the rubber inner sleeve.
By adopting the technical scheme, the rubber inner sleeve can be unfolded into the rubber pad by arranging the longitudinal cutting seam, namely the rubber inner sleeve can be formed by coating the metal anchor rod with the rubber pad, so that the method is convenient and fast; in addition, through the arrangement of the longitudinal cutting seams, the rubber inner sleeve is not easy to form shrivelled excess materials under the holding action of the steel wire.
Optionally, the guide bar group includes first guide bar group, first guide bar group is close to hang the end of stretching of metal stock, and is located the reinforcing bar net is kept away from one side of spacing retaining ring, the guide bar of first guide bar group is established to first guide bar, first guide bar is kept away from the one end of metal stock is equipped with the butt pole, the butt pole perpendicular to the axis of metal stock, the butt pole is used for the slope surface of butt foundation ditch.
Through adopting above-mentioned technical scheme, through the side slope surface that makes butt pole butt foundation ditch, be favorable to making first guide bar group keep in the position that is close to the side slope surface of foundation ditch, through the interval of first guide bar group of restriction and spacing retaining ring, the interval of the side slope surface of steerable spacing retaining ring and foundation ditch to be favorable to making the side slope surface of reinforcing bar net laminating foundation ditch.
Optionally, the axial of butt joint pole is followed the radial setting of metal stock, the butt joint pole supplies the position that first guide bar connects is located between the both ends of butt joint pole, the butt joint pole is close to the one end of metal stock is used for the outer peripheral face of butt metal stock.
Through adopting above-mentioned technical scheme, the position that the butt pole supplies first guide bar to connect leaves the length surplus with the butt pole between being close to the tip of metal stock, is favorable to reducing the first guide bar and is being close to the condition of metal stock along the radial effort deformation of metal stock under to be favorable to protecting first guide bar.
Optionally, the guide bar group is set to two sets, the guide bar group further comprises a second guide bar group, the second guide bar group is far away from the stretching end of the metal anchor rod, the guide bar of the second guide bar group is set to a second guide bar, the second guide bar is far away from one end of the metal anchor rod is extended to form an arc-shaped part, and the curvature center of the arc-shaped part is located the second guide bar is close to one side of the metal anchor rod.
Through adopting above-mentioned technical scheme, after the metal stock inserted the hole that foundation ditch side slope is used for the shaping anchor rod, when needing to make the metal stock roll back, arc portion metal guide arm forms the guide effect, makes the metal stock comparatively easily roll back.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the guide rods of the guide rod group prevent the metal anchor rods from being close to the hole walls of the holes where the anchoring rods are located along the radial direction, when the concrete of the anchoring rods is solidified to form the outer layer of the concrete column, the axis of the metal anchor rods is closer to the axis of the anchoring rods, so that the wall thickness of each part of the outer layer of the concrete column is closer, and the structural strength of the anchoring rods is favorably guaranteed;
2. by arranging the limiting retainer ring, the limiting retainer ring can block the reinforcing mesh from being far away from the slope protection surface of the foundation pit, so that the axial movement of the reinforcing mesh along the metal anchor rod is reduced, and the reinforcing mesh is favorably attached to the slope protection surface of the foundation pit; spacing retaining ring is the structure on outstanding metal stock surface, and spacing retaining ring is favorable to satisfying carrying on under spacing prerequisite to the reinforcing bar net, avoids the influence to metal stock intensity as far as possible.
Drawings
Fig. 1 is a schematic view of the overall structure of the present embodiment.
Fig. 2 is a partial enlarged view at a in fig. 1.
Fig. 3 is a schematic structural view of the metal anchor of the present embodiment.
Description of reference numerals: 1. an anchor rod; 11. a metal anchor rod; 12. an outer layer of a concrete column; 2. a reinforcing mesh; 3. a guide bar group; 301. a first guide bar group; 302. a second guide bar group; 31. a guide bar; 311. a first guide bar; 312. a second guide bar; 32. a butting rod; 3121. an arcuate portion; 4. a limiting retainer ring; 5. a rubber inner sleeve; 51. longitudinally cutting a seam; 6. an anchor rod hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a shotcrete suspended net foundation pit supporting structure. Referring to fig. 1 and 2, the shotcrete suspended net foundation pit supporting structure includes an anchoring rod 1 buried in a foundation pit slope and a reinforcing mesh 2 laid on a surface of the foundation pit slope, the anchoring rod 1 includes a metal anchor rod 11 and a concrete column outer layer 12, the metal anchor rod 11 is a steel member, and one end of the metal anchor rod 11 for suspending the reinforcing mesh 2 is a suspending end.
When the anchoring rod 1 is formed, firstly, an anchoring rod hole 6 is formed by drilling on the side slope of the foundation pit, then the metal anchoring rod 11 is inserted into the anchoring rod hole 6, the stretching end of the metal anchoring rod 11 extends out of the anchoring rod hole 6, then, the shotcrete pipe is utilized to spray concrete, the concrete is solidified to form a concrete column outer layer 12, and the stretching end of the metal anchoring rod 11 protrudes out of the end surface of the concrete column outer layer 12 facing outwards so as to be used for stretching the reinforcing mesh 2.
Referring to fig. 3, the metal anchor rod 11 is provided with two sets of guide rod groups 3, the two sets of guide rod groups 3 are arranged in a staggered manner along the axial direction of the metal anchor rod 11, each set of guide rod group 3 comprises three guide rods 31, each guide rod 31 is a steel drill rod, each guide rod 31 is welded and fixed with the metal anchor rod 11, the guide rods 31 in the same set are arranged in an array manner around the circumference of the axis of the metal anchor rod 11, and the guide rods 31 gradually and radially keep away from the metal anchor rod 11 along the direction of the hanging end close to the metal anchor rod 11. The guide rod 31 prevents the metal anchor rod 11 from approaching the wall of the hole in which the anchor rod 1 is located in the radial direction, so that the axis of the metal anchor rod 11 is aligned as much as possible.
Referring to fig. 3, the guide rod group 3 includes a first guide rod group 301 and a second guide rod group, the first guide rod group 301 is close to the hanging end of the metal anchor rod 11 and is located on one side of the steel mesh reinforcement 2 away from the limit stop ring 4, and the guide rod 31 of the first guide rod group 301 is set as a first guide rod 311; the second guide rod group 302 is away from the hanging end of the metal anchor 11, and the guide rod 31 of the second guide rod group 302 is set as a second guide rod 312.
Referring to fig. 3, one end of the first guide rod 311, which is far away from the metal anchor rod 11, is provided with a butting rod 32, an axis of the butting rod 32 is arranged along a radial direction of the metal anchor rod 11, a position of the butting rod 32, which is used for connecting the first guide rod 311, is located between two ends of the butting rod 32, and a position of the butting rod 32, which is far away from the metal anchor rod 11, is used for butting against a slope surface of a foundation pit so as to limit a distance between an end of a hanging end of the metal anchor rod 11 and the slope surface of the foundation pit; the one end that the butt pole 32 is close to metal stock 11 is used for the outer peripheral face of butt metal stock 11 to hinder first guide bar 311 to warp and be close to metal stock 11, thereby be favorable to protecting first guide bar 311.
Referring to fig. 3, an end of the second guide rod 312, which is away from the metal anchor 11, extends to form an arc portion 3121, and a curvature center of the arc portion 3121 is located at a side of the second guide rod 312, which is close to the metal anchor 11; when the metal anchor rod 11 needs to be retracted from the anchor rod hole 6 to repair the anchor rod hole 6 or correct the guide rod 31, the arc portion 3121 has a guiding function on the second guide rod 312, so that the metal anchor rod 11 is prevented from being jammed when retracted.
Referring to fig. 2, the hanging end of the metal anchor rod 11 is formed by winding a steel wire into a plurality of turns to form a limiting retainer ring 4, the limiting retainer ring 4 is used for preventing the mesh reinforcement 2 from being far away from the side slope of the foundation pit, and by limiting the distance between the limiting retainer ring 4 and the first guide rod set 301, the axial movement of the mesh reinforcement 2 along the metal anchor rod 11 can be reduced to be far away from the side slope surface of the foundation pit, and the mesh reinforcement 2 can be made to be tightly attached to the side slope surface of the foundation pit.
Referring to fig. 3, the hanging end of the metal anchor rod 11 is provided with a rubber inner sleeve 5 for winding a steel wire, and the rubber inner sleeve 5 can enable the position of the limiting retainer ring 4 to be more stable; the rubber inner sleeve 5 is provided with a longitudinal cutting slit 51 penetrating the rubber inner sleeve 5, and the longitudinal cutting slit 51 is arranged along the axial full length of the rubber inner sleeve 5. The rubber inner sleeve 5 can be formed by coating the metal anchor rod 11 with a rubber pad, so that the method is convenient and fast; by arranging the longitudinal cutting slits 51, the rubber inner sleeve 5 is not easy to form shrinkage excess materials under the holding action of the steel wire.
The implementation principle of the foundation pit supporting structure with the spray anchor hanging net in the embodiment of the application is as follows: the guide rod group 3 can enable the axis of the metal anchor rod 11 to be close to the axis of the anchoring rod 1, so that the wall thickness of each part of the outer layer 12 of the concrete column is close, and the structural strength of the anchoring rod 1 is guaranteed.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a spout anchor and hang net foundation ditch supporting construction, includes anchor rod (1) buried underground in the foundation ditch side slope and lays in reinforcing bar net (2) on foundation ditch side slope surface, anchor rod (1) includes metal stock (11) and concrete column outer (12), metal stock (11) are used for stretching hang the one end of reinforcing bar net (2) is established to stretch and is hung the end, its characterized in that: the metal stock (11) are equipped with multiunit guide bar group (3), each follow between the guide bar group (3) the axial dislocation set of metal stock (11), every group guide bar group (3) include a plurality of guide bars (31), with organizing guide bar (31) wind the axis circumference array of metal stock (11) sets up, guide bar (31) are along being close to the direction of hanging the end of opening of metal stock (11) radially keeps away from gradually metal stock (11), guide bar (31) are used for hindering metal stock (11) are along being close to the pore wall in anchor rod (1) place hole radially.
2. The shotcrete suspended net foundation pit supporting structure of claim 1, wherein: the end of hanging of stretching of metal stock (11) is equipped with spacing retaining ring (4), spacing retaining ring (4) are used for hindering foundation ditch side slope is kept away from in reinforcing bar net (2).
3. The shotcrete and suspended screen foundation pit supporting structure of claim 2, wherein: the limiting retainer ring (4) is a multi-turn wound steel wire coil.
4. The shotcrete suspended net foundation pit supporting structure of claim 3, wherein: and the stretching end of the metal anchor rod (11) is provided with a rubber inner sleeve (5) for winding a steel wire to form a limiting check ring (4).
5. The shotcrete suspended net foundation pit supporting structure of claim 4, wherein: the rubber inner sleeve (5) is provided with a longitudinal cutting slit (51) penetrating through the rubber inner sleeve (5), and the longitudinal cutting slit (51) is arranged along the axial full length of the rubber inner sleeve (5).
6. The shotcrete suspended net foundation pit supporting structure of claim 2, wherein: guide bar group (3) include first guide bar group (301), first guide bar group (301) are close to stretch out of metal stock (11) hang the end, and are located reinforcing bar net (2) are kept away from one side of spacing retaining ring (4), guide bar (31) of first guide bar group (301) are established to first guide bar (311), first guide bar (311) are kept away from the one end of metal stock (11) is equipped with butt joint pole (32), butt joint pole (32) perpendicular to the axis of metal stock (11), butt joint pole (32) are used for the side slope surface of butt foundation ditch.
7. The shotcrete suspended net foundation pit supporting structure of claim 6, wherein: the axial of butt joint pole (32) is followed the radial setting of metal stock (11), butt joint pole (32) supply the position that first guide bar (311) are connected is located between the both ends of butt joint pole (32), butt joint pole (32) are close to the one end of metal stock (11) is used for the outer peripheral face of butt metal stock (11).
8. The shotcrete and suspended screen foundation pit supporting structure of claim 6, wherein: guide bar group (3) are established to two sets ofly, guide bar group (3) still include second guide bar group (302), second guide bar group (302) are kept away from hang the end expanding of metal stock (11), guide bar (31) of second guide bar group (302) are established to second guide bar (312), second guide bar (312) are kept away from the one end of metal stock (11) is extended there is arc portion (3121), the centre of curvature of arc portion (3121) is located second guide bar (312) are close to one side of metal stock (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220863936.7U CN218060332U (en) | 2022-04-14 | 2022-04-14 | Foundation pit supporting structure with spray anchor hanging net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220863936.7U CN218060332U (en) | 2022-04-14 | 2022-04-14 | Foundation pit supporting structure with spray anchor hanging net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218060332U true CN218060332U (en) | 2022-12-16 |
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ID=84417463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220863936.7U Active CN218060332U (en) | 2022-04-14 | 2022-04-14 | Foundation pit supporting structure with spray anchor hanging net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218060332U (en) |
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2022
- 2022-04-14 CN CN202220863936.7U patent/CN218060332U/en active Active
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